Toyota Sienna Service Manual: Terminals of ECU

Toyota Sienna Service Manual / Cruise control / Dynamic laser cruise control system / Terminals of ECU

1. CHECK DISTANCE CONTROL ECU

CHECK DISTANCE CONTROL ECU

Reference: waveform 1

HINT:

Terminal: LRDD - SGND
Gauge set: 2 V/DIV., 10 ms./DIV.
Condition: ignition switch in the ON position

CHECK DISTANCE CONTROL ECU

Reference: waveform 2

HINT:

Terminal: LRRD - SGND
Gauge set: 2 V/DIV., 5 ms./DIV.
Condition: ignition switch in the ON position

2. CHECK ECM

CHECK ECM

If the value is not within the specified range, the ECM may have a malfunction.

3. CHECK LASER SENSOR

CHECK LASER SENSOR

Reference: waveform 1

HINT:

Terminal: LRDD - SGND
Gauge set: 2 V/DIV., 10 ms./DIV.
Condition: ignition switch in the ON position

CHECK LASER SENSOR

Reference: waveform 2

HINT:

Terminal: LRRD - SGND
Gauge set: 2 V/DIV., 5 ms./DIV.
Condition: ignition switch in the ON position

4. BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)

BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)

Problem symptoms table

HINT: Use the table below to help determine the cause of the problem symptom. The likely causes of the problem are indicated in descending order. Check each suspected area in order. Re ...

Diagnosis system

1. DIAGNOSIS FUNCTION The diagnosis function makes the light and the multi-information display come on, and the CRUISE main indicator light blink as shown in the illustration. When ...

Other materials:

Removal
1. REMOVE WINDSHIELD WIPER MOTOR ASSEMBLY 2. REMOVE FRONT OUTER COWL TOP PANEL SUBASSEMBLY 3. DRAIN ENGINE COOLANT 4. REMOVE V-BANK COVER SUB-ASSEMBLY 5. REMOVE NO. 2 AIR CLEANER INLET 6. REMOVE NO. 1 AIR CLEANER INLET 7. REMOVE AIR CLEANER CAP SUB-ASSEMBLY Disconnect the 3 vacuum hoses. ...

Precaution
1. INITIALIZATION NOTICE: Perform RESET MEMORY (AT initialization) when replacing the automatic transaxle assembly, engine assembly or ECM (See page AX-16). Perform REGISTRATION (VIN registration) when replacing the ECM (See page ES-15). HINT: Initializatio ...

Disassembly
1. REMOVE REAR SEAT LEG COVER LH Remove the 2 screws and seat leg cover. 2. REMOVE REAR SEAT LEG COVER RH Remove the 2 screws and seat leg cover. 3. REMOVE REAR SEAT LEG SIDE COVER LH Remove the 2 screws and leg side cover. 4. REMOVE LH SEAT REAR SEAT LOCK COVE ...